Uncategorized
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ADHD’s Brain Trail: Cerebral clues emerge for attention disorder
A new brain-imaging investigation suggests that disturbances in a network of regions involved in regulating actions and attention underlie the childhood psychiatric ailment known as attention-deficit hyperactivity disorder.
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19289
Nice to know that someone is scanning kids’ skulls for attention-deficit hyperactivity disorder (ADHD). The essential problem with this sort of thing is that psychology and psychiatry are descriptive endeavors and particularly flexible when it comes to describing ADHD. It’s unlikely that all the behaviors associated with the syndrome have a common physiologic structure. This […]
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- Math
The Cow in the Classroom
“Miss Zarves drew a triangle on the blackboard. ‘A triangle has three sides,’ she said, then pointed to each side. ‘One, two, three.’ She drew a square. ‘A square has four sides. One, two, three, four.’ “She walked around the cow to the other side of the board. She drew a pentagon, a hexagon, and […]
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There’s no faking it
The brain activity in men and women having an orgasm is very similar.
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HIV protein breaks biological clock
The AIDS virus secretes a protein that interferes with an animal's biological clock.
- Health & Medicine
Cleaning up glutamate slows deadly brain tumors
Eliminating the glutamate released by brain tumors may slow the cancer's growth.
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Protein triggers nerve connections
Nonnerve cells called astrocytes secrete a protein that enables nerve cells to connect.
- Health & Medicine
Drug cuts recurrence of breast cancer
Letrozole, which blocks estrogen production, reduces recurrence of breast cancer in women who have exhausted the usefulness of tamoxifen, the frontline cancer drug for this disease.
- Earth
Fill ‘er up . . . with a few tons of wheat
A new analysis suggests that the amount of ancient plant matter that was needed to make just 1 gallon of gasoline is the same amount that can be grown each year in a 40-acre wheat field—roots, stalks, and all.
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19288
Your article states, “There are about 4.14 kilograms of carbon in a gallon of gasoline, says Dukes.” If he actually said that, this would seem to qualify this gasoline as an “alternative fuel,” since a gallon of ordinary gasoline is only about 2.5 kilograms in mass. Perhaps Dukes meant 4.14 pounds of carbon per gallon. […]
- Ecosystems
UK halts badger kill after study of TB
Partial results from a new study have pushed the United Kingdom to stop its controversial, decades-old policy of killing local badgers if cattle catch TB.
